为了满足不同业务对 5G网络差异化的需求,5G网络采用了网络切片技术,将网络资源灵活分配,实现网络端到端或某一部分资源的切分,包括终端、接入网和核心网的切分.每个切片的能力按业务需求进行切分,在同一网络基础设施上,切分出多个具备不同能力的虚拟子网.根据《3GPP TS 23.501-System architecture for the 5G System(5GS)Stage 2(Release 18)》规范,定义了六大类(SST字段分类)切片,分别是eMBB(Enhanced Mobile Broadband,增强移动宽带)切片、URLLC(Ultra-reliable and Low Latency Communications,高可靠低时延通信)切片、MIoT(Massive IoT,大规模物联网)切片、V2X(Vehicle To Everything,车联网)切片、HMTC(High-Performance Machine-Type Communi-cations,高性能机器类通信)切片、HDLLC(High Data rate and Low Latency Communications,高数据速率低时延通信)切片.对切片技术进行了介绍,同时,对特定场景的切片监测系统进行了研究,给出了一种切片监测系统的实现方案,该系统可帮助提高特定场景切片网络安全性和可靠性.
Research on 5G Network Slicing Technology and Monitoring System
In order to meet the different requirements of 5G network for different services,5G network adopts network slicing technology,which allocates network resources flexibly,and realizes the slicing of network resources from end to end or some part of the network,including UE,AN and CN.The capabilities of each slice are segmented according to business requirements,and multiple virtual subnets with different capabilities are segmented on the same network infrastructure.According to"3GPP TS 23.501-System architecture for the 5G System(5GS)Stage 2(Release 18)",six categories(SST field classification)slicing are defined,they are eMBB(Enhanced Mobile Broadband)Slice,URLLC(Ultra-reliable and Low Latency Communications)slice,Miot(Massive IoT)slice,V2X(Vehicle To Everything)slice,HMTC(High-Performance Machine-Type Communications)slice,HDLLC(High Data rate and Low Latency Communications)slice.This paper introduces the slice technology,at the same time,studies the slice monitoring system of the special scene,and gives a realization scheme of the slice monitoring system.The system can help to improve the security and reliability of the slicing network for specific scenarios.
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